Navy Minesweeper Located in Lake Washington

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Navy Minesweeper Located in Lake Washington

Post by jsharps » Mon Dec 17, 2007 10:22 pm

This past weekend JaWS and Innerspace Exploration located and captured sonar imagery of a previously undocumented Navy Minesweeper in Lake Washington.

Though a lot of folks are familiar with the YMS-359 that sits at the bottom of the lake, this is actually the 3rd YMS to be found out there – and by all accounts it looks like this ‘new’ one is in the best condition of the bunch. Engines, some equipment and the guns have been removed, but otherwise it appears to be intact.

More information, including sonar imagery located here:

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Post by Joshua Smith » Mon Dec 17, 2007 11:46 pm

Very interesting! Please keep us informed about your work on this wreck- I bet this is incredibly exciting for you all! I'm always amazed that Lake Washington has so many wrecks waiting to be discovered!
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Post by mattwave » Tue Dec 18, 2007 3:34 pm


Wish I had a converted Minesweeper, that would be a party dive boat for sure.
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Post by Solitude Diver » Tue Dec 18, 2007 7:21 pm

Pretty cool. Nice sonar shots too.

If someone were to want to learn more about using sidescans and magnometers, etc. how and where would they go about it? Is there any specific (formal) training offered anywhere, or is it all basically on the job type training?

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Underwater Images up of the YMS

Post by jsharps » Sat Jan 05, 2008 9:05 pm

Dec 31st we put divers on the Minesweeper.
Images taken from video posted here:

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Post by sparky » Sat Jan 05, 2008 11:25 pm

Way to cool at the rate you guys are going there wont be to many wrecks that are left undiscovered. I cant even began to think how excited your team must be

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